ARM VERSION 1.2 - page 340

Directives Reference

7.7.7 EXPORT or GLOBAL

The

EXPORT

directive declares a symbol that can be used by the linker to resolve symbol

references in separate object and library files.

GLOBAL

is a synonym for

EXPORT

Syntax

EXPORT {symbol}{[WEAK]}

where:

symbol

is the symbol name to export. The symbol name is case-sensitive. If

symbol

is omitted, all symbols are exported.

[WEAK]

means that this instance of

symbol

should only be imported into other

sources if no other source exports an alternative instance. If

[WEAK]

is used

without

symbol

, all exported symbols are weak.

Usage

Use

EXPORT

to give code in other files access to symbols in the current file.

Use the

[WEAK]

attribute to inform the linker that a different instance of

symbol

takes

precedence over this one, if a different one is available from another source.